Kerala has 145,704 kilometers (90,536 mi) of roads (4.2% of India's total). This translates to about 4.62 kilometers (2.87 mi) of road per thousand population, compared to an all India average of 2.59 kilometers (1.61 mi). Virtually all of Kerala's villages are connected by road. Traffic in Kerala has been growing at a rate of 10–11% every year, resulting in high traffic and pressure on the roads. Kerala's road density is nearly four times the national average, reflecting the state's high population density. Kerala's annual total of road accidents is among the nation's highest.
Trivandrum Central Railway Station.
India's national highway network includes a Kerala-wide total of 1,524 kilometers (947 mi), which is 2.6% of the national total. There are eight designated national highways in the state. The Kerala State Transport Project (KSTP), which includes the GIS-based Road Information and Management Project (RIMS), is responsible for maintaining and expanding the 1,600 kilometers (994 mi) of roadways that compose the state highways system; it also oversees major district roads. Most of Kerala's west coast is accessible through two national highways, NH 47, and NH 17.
The state has major international airports at Thiruvananthapuram, Kochi, and Kozhikode, that link the state with the rest of the nation and the world. The new airports are coming up in Aranmula, near to Kozhencherry in Pathanamthitta district, Kannur, and Idukky. The Cochin International Airport at Kochi is the first international airport in India that was built without Central Government funds, and is also the country's first publicly owned airport. The backwaters traversing the state are an important mode of inland navigation. The Indian Railways' Southern Railway line runs throughout the state, connecting all major towns and cities except those in the highland districts of Idukki and Wayanad. Kerala's major railway stations are Trivandrum Central, Kollam Junction, Ernakulam Junction, Thrissur, Kozhikode, Shoranur Junction, and Palakkad.
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